EP1691351A3 - Disk-shaped magnetic recording medium - Google Patents

Disk-shaped magnetic recording medium Download PDF

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Publication number
EP1691351A3
EP1691351A3 EP06002871A EP06002871A EP1691351A3 EP 1691351 A3 EP1691351 A3 EP 1691351A3 EP 06002871 A EP06002871 A EP 06002871A EP 06002871 A EP06002871 A EP 06002871A EP 1691351 A3 EP1691351 A3 EP 1691351A3
Authority
EP
European Patent Office
Prior art keywords
disk
recording medium
magnetic recording
shaped magnetic
tracking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06002871A
Other languages
German (de)
French (fr)
Other versions
EP1691351A2 (en
Inventor
Kazunori Komatsu
Satoshi Wakamatsu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujifilm Corp
Original Assignee
Fujifilm Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujifilm Corp filed Critical Fujifilm Corp
Publication of EP1691351A2 publication Critical patent/EP1691351A2/en
Publication of EP1691351A3 publication Critical patent/EP1691351A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
    • G11B5/59633—Servo formatting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
    • G11B5/743—Patterned record carriers, wherein the magnetic recording layer is patterned into magnetic isolated data islands, e.g. discrete tracks
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/86—Re-recording, i.e. transcribing information from one magnetisable record carrier on to one or more similar or dissimilar record carriers
    • G11B5/865—Re-recording, i.e. transcribing information from one magnetisable record carrier on to one or more similar or dissimilar record carriers by contact "printing"

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Nanotechnology (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
  • Magnetic Record Carriers (AREA)
  • Paints Or Removers (AREA)

Abstract

The present invention provides a disk-shaped magnetic recording medium (2) in which a servo signal for tracking is recorded as a preformat by a magnetic transfer method. This disk-shaped magnetic recording medium (2) facilitates the manufacture of a master disk (3) which carries information to be transferred. The disk-shaped magnetic recording medium (2) permits the asymmetry of a regenerative signal of a servo signal for tracking which is recorded, facilitates the manufacture of a master disk (3) which carries information to be transferred, and enables a servo signal for tracking to be recorded in a short time by use of a magnetic transfer method.
Figure imgaf001
Figure imgaf002
EP06002871A 2005-02-14 2006-02-13 Disk-shaped magnetic recording medium Withdrawn EP1691351A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005036768A JP2006221773A (en) 2005-02-14 2005-02-14 Disk shape magnetic recording medium

Publications (2)

Publication Number Publication Date
EP1691351A2 EP1691351A2 (en) 2006-08-16
EP1691351A3 true EP1691351A3 (en) 2007-09-26

Family

ID=36423624

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06002871A Withdrawn EP1691351A3 (en) 2005-02-14 2006-02-13 Disk-shaped magnetic recording medium

Country Status (3)

Country Link
US (1) US20060181796A1 (en)
EP (1) EP1691351A3 (en)
JP (1) JP2006221773A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008004200A (en) * 2006-06-23 2008-01-10 Fujifilm Corp Manufacturing method of master recording medium, magnetic transfer method using manufactured master recording medium and manufacturing method of magnetic recording medium
JP2008065910A (en) * 2006-09-07 2008-03-21 Fujifilm Corp Master recording medium, magnetic transfer method, magnetic transfer device, magnetic recording medium produced by same, and magnetic recording and reproducing device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11213313A (en) * 1998-01-30 1999-08-06 Toshiba Corp Magnetic disk device and servo processing method applied to this device
JP2003257001A (en) * 2001-12-26 2003-09-12 Mitsubishi Chemicals Corp Magnetic recording medium, information recorder and signal measuring device
EP1347441A2 (en) * 2002-03-20 2003-09-24 Fuji Photo Film Co., Ltd. Master information carrier for magnetic transfer
US20040257687A1 (en) * 2000-03-31 2004-12-23 Matsushita Electric Industrial Co., Ltd. Master information carrier and method for manufacturing magnetic disc using the same

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5379162A (en) * 1993-08-19 1995-01-03 International Business Machines Corporation Customized data recovery procedures selected responsive to readback errors and transducer head and disk parameters
CA2127971C (en) * 1993-09-23 1999-01-12 Todd Barry Anderson Method and apparatus for phase modulated servo positioning in a direct access storage device
JP3499034B2 (en) * 1995-03-13 2004-02-23 富士通株式会社 Asymmetric signal detection circuit
US6091560A (en) * 1997-10-30 2000-07-18 Seagate Technology, Inc. Low frequency signal baseline shift compensation in a disc drive
US6249890B1 (en) * 1998-06-05 2001-06-19 Seagate Technology Llc Detecting head readback response degradation in a disc drive
US6449110B1 (en) * 1999-02-03 2002-09-10 Cirrus Logic, Inc. Optimizing operation of a disk storage system by increasing the gain of a non-linear transducer and correcting the non-linear distortions using a non-linear correction circuit
US6636371B1 (en) * 1999-04-26 2003-10-21 Fuji Photo Film Co., Ltd. Magnetic transfer method and system
US6556933B1 (en) * 1999-10-28 2003-04-29 Seagate Technology Llc Transducer instability detection in a digital channel
SG112852A1 (en) * 2001-10-04 2005-07-28 Matsushita Electric Ind Co Ltd Manufacturing method for magnetic recording medium, and master information carrier used therefor
EP1408498A1 (en) * 2002-10-08 2004-04-14 Deutsche Thomson-Brandt GmbH Method for compensating an offset in an asymmetric reproduction signal

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11213313A (en) * 1998-01-30 1999-08-06 Toshiba Corp Magnetic disk device and servo processing method applied to this device
US20040257687A1 (en) * 2000-03-31 2004-12-23 Matsushita Electric Industrial Co., Ltd. Master information carrier and method for manufacturing magnetic disc using the same
JP2003257001A (en) * 2001-12-26 2003-09-12 Mitsubishi Chemicals Corp Magnetic recording medium, information recorder and signal measuring device
EP1347441A2 (en) * 2002-03-20 2003-09-24 Fuji Photo Film Co., Ltd. Master information carrier for magnetic transfer

Also Published As

Publication number Publication date
US20060181796A1 (en) 2006-08-17
JP2006221773A (en) 2006-08-24
EP1691351A2 (en) 2006-08-16

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